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Optimized heavy-duty CI engine fueled with DME delivers diesel performance, significantly reduces engine-out emissions

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A team from Empa - Swiss Federal Laboratories for Materials Science and Technology and FPT Motorenforschung reports in an open-access paper in the journal Fuel on the performance and emission characteristics of an 11-liter heavy-duty compression ignition engine which was optimized specifically for DME (dimethyl ether) combustion.

Engine 368
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SwRI engineers develop near-zero emissions diesel engine technology; 90% reduction of NOx

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Southwest Research Institute engineers have developed the next generation of clean diesel engine technology to reduce hazardous nitrogen oxides (NO x ) and carbon dioxide emissions while minimizing fuel consumption. g/hp-hr NO x emissions). g/hp-hr NO x emissions).

Engine 545
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CARB and truck and engine manufacturers announce partnership to meet climate and emission reduction goals

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The terms of the Clean Truck Partnership include: CARB will align with EPA’s 2027 regulations for NO x emissions. CARB also will modify elements of the 2024 NO x emission regulations for which manufacturers will provide offsets as necessary to maintain California’s emission targets. Isuzu Technical Center of America, Inc.;

Emissions 305
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Independent study confirms cost savings & emissions advantages for heavy-duty trucks running ClearFlame’s engine technology

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ClearFlame Engine Technologies, a startup developing net-zero engine technology ( earlier post ), announced the publication of an independent study that finds ClearFlame’s technology could help fleet owners and other heavy-duty truck operators lower total costs while meeting sustainability goals sooner than currently available alternatives.

Emissions 370
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EPA grants waivers for California’s on-highway heavy-duty vehicle and engine emission standards

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The US Environmental Protection Agency (EPA) is granting two waivers of preemption regarding four California Air Resource Board (CARB) regulations related to California’s heavy-duty vehicle and engine emission standards. In this instance, CARB requested two waivers for regulations relating to heavy duty vehicles and engines.

EPA 210
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Bosch Engineering and Ligier Automotive present Ligier JS2 RH2 with hydrogen engine at Le Mans

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Just a few months into a joint innovation project ( earlier post ), engineers from Bosch Engineering and Ligier Automotive have built a high-performance vehicle with a hydrogen engine. The vehicle features a V6 hydrogen engine and a carbon monocoque that integrates three 700-bar type IV hydrogen cylinders from Hexagon Purus.

Engine 459
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UC Riverside engineers to “referee” CARB heavy-duty truck emissions program

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University of California, Riverside (UCR) environmental engineers will soon serve as referees in California’s drive for heavy-duty trucks to meet the state’s tailpipe emission standards. Within the next few years, UCR will be expanding its referee testing network throughout the state to ensure statewide coverage.

Emissions 199